goedon



(No Model.)

P. W. GORDON.

HOT BLAST GONDUIT.

No. 340,110. Patented Apr. 20, 1886.

Witnesses Attorney STATES ATENT OFFICE.

FRED. \V. GORDON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO GORDON,STROBEL & LAUREAU, OF SAME PLACE.

HOT BLAST CONDUIT.

eeecrrrcarxon forming part of Letters Patent No. 340,110, dated April20. 1886.

Application filed October '26, 1885. Serial No. 180,982. (No model.)

To aZZ whom it may concern.-

Be it known that I, FRED. \V. GORDON, of Philadelphia, Philadelphiacounty, Pennsylvania, have invented certain new and useful Improvementsin Hot-Blast Conduits, ofwhich the following is a specification.

This invention relates to improvements in conduits for the conveyance ofheated gaseous fluids.

The improvement is designed to secure a uniformity of temperature inthese fluids independent of the means by which they are heated. As anexample, I may cite the operation of a blast-furnace. If a hot-blaststove be highly heated and a cold-blast forced through it, the blastwill be highly heated, and as the blow continues the stove will becomecool, and the blast correspondingly cooled, until finally the stovebecomes so cold as to no longer supply the blast with the requisiteheat. It, then, the blast be switched off, so as to pass through anewly-heated and highly-heated stove, the blast will again become highlyheated; but, as before, the temperature of the blast will continue tolessen throughout the blow.

My invention will be fully understood from the following description,taken in connection with the accompanying drawings, in which- Figure lis a plan of a hot-blast plant exemplifying my improvements in conduits,the furnace which utilizes the blast being shown in horizontal section;Fig. 2, a longitudinal section of the equalizer upon line b,- Fig. 3, atransverse section of the equalizer upon line a, and Fig. i an elevationillustrating a modified construction of the equalizer.

In the drawings, A indicates in plan two hot-blast stoves, which may beof any form adapted to the heating of a current of air passing throughthem, the means and manner of heating the stoves being as usual; B, thecold-blast inlets to the stoves, provided with valves; 0, the hot-blastoutlets of the stoves and the inlets to the equalizer; D, a

furnace in which the hot blast. is to be utilizedas, for instance, ablast-furnace or a steel-furnace; E, the blow-pipes by which the hotblast is admitted to the furnace; F, the pipe by which the hot blast,after leaving the equalizer, is led to the blow-pipes; G, the equalizer,consisting of a large vessel of sufficient strength to withstand thepressure of blast, and of sufficient cross-sectional area to containregenerative walls or filling, and, in additiomprovide passages for theair of such area as not to seriously impair the efficiency of the blastby friction; and H, the regenerative work within the equalizer, the sameconsisting of numerous flues constructed of re fractory material-as, forinstance,fire-brickadapted to absorb the excessive heat of the blastpassing through them, and to yield up theirexcessive heat to a coolerblast passing through them. There room permits of such construction theequalizer may be in horizontal cylindrical form, as indicated,the inletsand the outlets being shown as'double. The equalizer may be disposedvertically where conditions favor such disposition, the heated gaseousfluids en tering at either the upper or lower end, and discharging atthe opposite end; or the equalizer may have a double vertical form,beingdoubled upon itself, as indicated in Fig. 4; or, if desired, the doublevertical arrangement may be embodied in a single surrounding shell, witha central division-wall reaching from the base to near the top, thefluids passing both in and out at the base of the equalizer, and turningat the top over the central partition.

I claim as my invention- The combination, with an apparatus for heatinggaseous fluids and an apparatus for utilizing such heated fluids, of aconduit connecting the two apparatus and provided with a mass ofheat-absorbing material arranged to be traversed by said fluids.

FRED. XV. GORDON. \Vitnesses:

E. B. FULLERTON, A. BROCKMEYER.

